Grate-bar and support therefor



E. B. McCONNELL.

GRATE BAR AND SUPPORT THEREFOR. APPLICATION FILED ram-13, I920.

Patented June 28, 1921.

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To all whom it may concern: i .Be it known that I, EDWARD B. McCon-NELL, a citizen of the United States, and a resident Of Newark,inthelcounty of Essex and State of New Jersey, have invented a new. andImproved "Grate-Bar and Support Therefor, of which the following is afull, clear, and exact description.

This invention relates to improvements in grate bars and supportstherefor, an object of the invention being to provide a grate bar havinghigh and low trunnions at both ends, and provide supports for the gratebar so that the latter may be supported upon either its high or lowtrunnion.

Heretofore, in the art, it has been the common practice to provide gratebars alternately arranged, one series of bars having high trunnions andthe other series of bars low trunnions so that when the bars areoscillated to shake the grate, the adjacent bars have their pivotalsupports at different elevations so as to swing the grate bars indifferent arcs. I provide grate bars having both high and low trunnionsat both ends and provide suitable mounting which will enable the bars tobe supported either on the high or low trunnions so that while all thebars are alike, they are perfectly interchangeable, and when a bar isbroken or injured and needs replacement, a single type of bar willanswer all purposes and not require specially constructed bars forspecial parts of the grate.

With these and other objects in view the invention consists in certainnovel features of construction, and combinations and arrangements ofparts as will be more fully hereinafter described and pointed out in theclaims.

In the accompanying drawings Figure 1 is a view in end elevation of aset of grate bars showing the supporting frame in section;

Fig. 2 is a view in section on the line 22 of Fig. 1;

Fig. 3 is a view in section on the line 3-3 of Fig. 1; and

Fig. 4 is a view in side elevation of the center carrying bar.

1 represents the frame of the grate having a center carrying bar 2 andend carrying bars 3. My improved grate bars designated by the referencenumeral 4 are provided at both ends with high and low trunnions 5 and 6.The high trunnions 5 GnATn-BAR AND SUPPORT 'rnnnnron.

Specification of Letters Patent; i Patented 11119 28, 1921, Applicationfiled March 13, 1920. Serial No. 365,476.

ject beyond the low trunnions 6.

The center bar 2 is provided with alternately arranged high and lowbearings 7 and 8 and below the high bearings integral flanges 9 areformed and under these flanges 9, lugs 10 on the ends of the grate barsare adapted to swing to prevent vertical displacement of the bar.

The end or side supporting bars 3 are also made with alternate high andlow bearings 11 and 12. 'Below the high bearings 11 curved flanges 13are provided to receive the lugs 10 on the ends of the grate bar andabove the low bearings 12 the frame bars 3 are provided with curvedslots 14 to accommodate the high trunnions 5 of the grate bar.

The grate bars are made with depending crank arms 15 and connected bylinks 17 so that when these links are moved longitudinally, they willcause an oscillating movement to be imparted to the grate bars,

pro-

, it being understood that all of the bars supported on their lowtrunnions will have a loose connection with the link to compensate forthe different elevations of the bearings.

It will be noted that with my improved construction the grate bars arereadily interchangeable and can be supported either upon their high orlow trunnions, and hence in the making of the grate I construct allgrate bars alike and yet secure the desired results of supporting theadjacent grate bars on high and low trunnions respectively so as to givethe desired difference in oscillation to the bars in use.

Various slight changes might be made in the general form and arrangementof parts described without departing from the invention, and hence I donot limit myself to the precise details set forth, but consider myselfat liberty to make such changes and alterations as fairly fall withinthe spirit and scope of the appended claims.

I claim:

1. In a grate, a series of identical grate bars having high and lowtrunnions, and means for selectively supporting said bars on eithertheir high or low trunnions.

2. The combination with a supporting frame having adjacent high and lowbearings, and a series of grate bars, all of said grate bars havinghigh'and low trunnions at both ends, certain of said bars supported ontheir high trunnions'in the high bearings'of the frame and the barsadjacent thereto sup-, ported on their 10W trunnions in the low bearingsof the frame.

3. The combination with a suppcrting frame having adjacent high and lowbea'rings, a series 0i grate bars, all of said grate bars having highand low trunnions at both ends, certain of said bars supportedon theirhigh trunnions in the high bearings of the .frame and the bars adjacentthereto supported on their low :trunnions in the 10w bearin g's oftheframe, curved flanges on the frames below the high bearings, and lugsonthe ends of the :bars movable under said flanges. 7

4. TheAc' mbi-natiQn with a isnpperting frame having adjacent high andlow bearings, a series of grate bars, all of said grate bars having highand 16W trunnions at both ends, certain of said bars supported on their"high trunnions in the high bearings of the hearings receiving the hightrunni'on's of the grate "bars sl lppqrted -in the low bearings.

nerve tends. McGGNNELL;

